import book.BookList;
import user.AdminUser;
import user.NormalUser;
import user.User;

import java.util.Scanner;

public class Main {

    //返回值- 向上转型
    public static User login(){
        Scanner scanner = new Scanner(System.in);
        System.out.println("请输入你的姓名");
        String name = scanner.nextLine();
        System.out.println("请输入你的身份:0->普通用户  1->管理员");
        int choice = scanner.nextInt();
        if(choice == 1){
            return new AdminUser(name);
        }
        else{
            return new NormalUser(name);
        }
    }
    public static void main(String[] args) {
         BookList book = new BookList();
         User user = login();
         while(true){
             int choice = user.menu();
             user.doOperation(choice,book);
         }
    }
}